Mathematics desk
< May 8	<< Apr \| May \| Jun >>	May 10 >

Welcome to the Wikipedia Mathematics Reference Desk Archives
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages.

May 9

Matlab number formatting

Hi, I know this is not a terribly exciting maths question, but: when I use Matlab, sometimes it spits out the numbers (if it is a matrix) using a single exponent (i.e.: x10^3) at the top, then it displays the matrix or vector as a list of numbers that the user has to multiply by this power of 10. Does anyone know how to turn off this annoying feature? Thanks, It's been emotional (talk) 19:21, 9 May 2011 (UTC)[reply]

"format short g" 86.147.0.56 (talk) 21:48, 9 May 2011 (UTC)[reply]

Yes, that seems to be the one. Thanks! It's been emotional (talk) 16:33, 10 May 2011 (UTC)[reply]

3D analog of a plane

In 4D geometry and higher, what's the name for the 3D analog of a point/line/plane? --75.40.204.106 (talk) 23:21, 9 May 2011 (UTC)[reply]

Often hyperplane, or sometimes just "3-dimensional subspace". Staecker (talk) 23:24, 9 May 2011 (UTC)[reply]

A hyperplane is a space with three dimensions in four dimensions. You also can have planes, lines and points with two, one and zero dimensions within four dimensions. Four-dimensional space has some detail but doesn't that I can see classify them.--JohnBlackburne^words_deeds 23:26, 9 May 2011 (UTC)[reply]

3D surface

In 4D geometry, what's the 3D version of a surface (not necessarily a plane)? --75.40.204.106 (talk) 23:32, 9 May 2011 (UTC)[reply]

A hypersurface.--JohnBlackburne^words_deeds 23:35, 9 May 2011 (UTC)[reply]